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2) Please warn high voltage inside the UPS the time of day.And keep no power
inside the UPS before maintenance.
3) Stop to take metal, jewelry,watch etc before maintenance.
4) Please use special tool and testing equipment
5) Please keep label and history when maintenance.
6.4
Troubleshoot
Abnormal phenomenon
Fault diagnosis
Solutions
Alarming when battery
connects
Connection mothed is reverse
Checking and connect
rightly
Fan stop running
Fan failed or board of fan
damaged
Contact technician man
repair
Switch failed
Check power supply switch
Don’
t work when
turn on UPS
Power supply board failed
Contact technician man
repair
Battery switch don’
t turn on or
failed
Check power supply
switch
Line is failed and No
output
Low battery to supply
Contact technician man
testing
UPS don’
t have
communitcation
Communicate softeware wrongly
set and data cable has failure
Reset and change data
cable.
UPS don’
t start up in
line and UPS works
normally in battery
Charging board has failure
Checking if input fuse of
charging board are
failed
Small charging current
Long backup charging board
are failed
Checking if input fuse of
charging board are failed
Heatsink is over temperature
in inverter
Check if heatsink do
work or not
Buzzer alarms for a long
time, fault light is bright
UPS failed
Contact technician man
repair
